My one disappointment is that they are using a "standardized" XCOR airframe/engine. Diamandis says he thinks of it as "a rememberance of Star Wars pod racing"... well they didn't use standardized airframes:) they built it and brought it. I wish they could take the same mentality.
5,000 feet is an altitude that may be covered in seconds by a rocket at speed.
No, it will be covered at 5000/(Velocity in Feet Per Seconds) seconds.
With a max speed of 320 MPH (which you surely would not be doing in a maneuvering course) a two mile length of track would take 22.5 seconds per lap. Faster than NASCAR, yes. But that's the point.
The article specifically states kerosene engines. Kerosene is a liquid at all but the most extreme temperatures.
I cannot imagine any braking system that would allow such a craft to slow down adequately for a "turn."
It's called aerodynamics. Flaps. And you won't be gunning it most of the time. It depends on the course.
The dynamics of these racers would appear to all but defy anything we have ever produced.
Check out XCOR's website. The spec listed on the Rocket Racing website is very similar to the bird XCOR is currently flying, and will be flying at the XPRIZE cup.
And such a craft would not necessarily operate in outer space.
No !@#$
The same way you make the Blue Angels look impressive... a "chase" plane that doesn't chase but rather engages head-on from time to time, and at other times intersects the path at various angles. You will get a very real perception of velocity.
Umm... Bernoulli and Newtonian views both explain the phenomenon of lift and are in agreement. It's just two different perspectives of looking at the same problem.
it must be made clear that it is utterly false. There is no requirement that the air over the top must catch up to the air below
Actually this is known as the Kutta condition. The airflow on top must speed up, but by the end of the flow it must slow down to be the same speed as the flow below. (I'm not a big fan of Wikipedia... pick up a good aerodynamics text, I'd recommend "Fundamentals of Aerodynamics" by Anderson)
Sure. But we have had good measurements on said data for how long? 100 years, and that's being generous. How long has the world existed? 8000-4 billion years, depending on how you ask. That's like asking how a baseball game is going based on looking at a single pitch.
We simply don't have enough data to make these kinds of statements.
-everphilski-
Re:how many people actually _like_ windows?
on
Pepping Up Windows
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· Score: 0
Windows XP just works. In order to get the conglomeration of games and engineering software I need working on Linux, it's just too much work. I put in my 40+ at work, I take grad school classes at night, I don't have time (even if it's only one time and I never f*ck it up) to set up a linux box. XP installed in under an hour, didn't need to spend hours upon hours getting oddball pieces of software working with WINE (some of the software I need to use has a userbase of
I want to come home and relax, not be a sysadmin.
And (parting shot) MacOS is just too simple. Sorry. My brain requires multiple mouse buttons, by default:)
-everphilski-
Re:Talking out both sides of out mouths.
on
Pepping Up Windows
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· Score: 1
You have discovered the secret of/.... I'd suggest you start running. The black vans are on their way...
Global warning is the result of greedy men (i.e. sinners) polluting the air
That isn't fact. Keep science and religion seperate. Many believe global warming come in cycles (IE: leaving an ice age). You're bound to offend more people than you comfort.
Sure. I have no problem with that. I have a problem with people crying foul, that Fox is presenting a "biased news story" when it is an opinion piece.
-everphilski-
I used to ... but thumb drives kick butt.
on
Portable Storage Guide
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· Score: 4, Interesting
I used to. It worked well. But after having a thumb drive for a month I wouldn't switch back. I have my entire "my documents" and development tree stored on my thumb drive. It is always the latest and most updated version. When I arrive at work, I copy it over. When I leave work, i copy from the computer to the thumb drive. Same as home. The internet worked... unless internet was out at home. Or if internet was out at work. And the data was too preicous not to have even for a few hours. And when you are in an environment where internet traffic is heavily monitored (and pushing upwards of 100M) the thumb drive reigns supreme.
... If you dont believe me. Go to www.foxnews.com, and click on "opinion" (don't take the submenu). It will take you to this article.
Theres nothing wrong with an opinion article saying that he is against the switch to open source formats (he makes a few valid points - the exception of Adobe Acrobat products and the fact that OO Calc does truly suck).
Wow. Someone completely missed it.
Russia needs venture capital. ESA can't come up with their own manned space program. They hook up. We'll see what happens in a few years.
-everphilski-
1. Russia already has it engineered. Plans are made, mockups are built. Some test pieces are already constructed.
2. The vehicle will be launch on top of a Russian launch vehicle.
3. The vehicle will be launched from a Russian facility.
Therefore...
4. All Russia is just looking for capital to build. They know the US can't give them money due to the non-proliferation act (with exception, possibly, for a few soyuz flights with the condition that they support Space Station).
My angle? I hate the fact that people keep trumpeteering that "The ESA is so much better than NASA" "The ESA this" "The ESA that"... the ESA didn't do shit for Clipper (formerly Klipper when it was an exclusively Russian project) other than potentially help fund it.
No. It wouldn't have been. We couldn't have gotten the shuttle (or a soyuz for that matter... any manned carrier) to a lagrange point. He was saying a lower inclination orbit, probably 28.6 degrees, the inclination of JSC in Florida. It would have added several thousand pounds usable payload to each shuttle flight.
Yup. I think 80% dropout rate is fine. People are overambitious. They bite off more than they can chew. Five years (the average amount of time it takes to complete a mechanical/aerospace degree, which I have experiance in) is a *long* time to be overambitious. The freshmen classes act as a filter (something you learn about in senior level classes, if you make it:)
I had very few TA's. And none of them were in the Engineering department, they were all in the math and chemistry department. So even if you dropped engineering to do something else... you would be faced with bad TA's.
Again, I feel bad for whatever school you went to. It sucks. But you have to realise that not everyone who signs up for a course of study is cut out to finish it.
I feel sorry for you. Paying thousands of dollars for a single class?!? What school did you go to?
I had the opposite experiance. I never had a class of 100 students - most times it was under 50 even at the freshman level. Overall it was a very postive experiance and I was one of the few that stuck it out and got my degree in (Aerospace) engineering (our school has ~80% "dropout" rate of students who switch to other majors between Freshman and Junior years).
The truth is not everyone who signs up to be "insert major here" is cut out to be it. You have to be dedicated. You have to work through the shit, and yes sometimes you have to deal with people you don't want to deal with. It's part of growing up. Maybe engineering is unreasonably intolerable to some, maybe that's a sign its not for you.
Your brother would be wise to specialize. Mechanical engineering in itself is very generic. Specialists in things like chemical/nuclear/aerospace engineering are hard to outsource due to sensitive information crossing country borders.
(I happen to be an aerospace engineer... I feel very comfortable that I will have a job for years to come)
... and those of us who stuck it out, who were able to look past our GPA's, who were able to realise "hey, getting a 55% on an exam is OK if the average was a 45%", we are enjoying better than average pay and benefits in our engineering jobs. You get back what you put in. Freshmen engineeering courses are BUILT to weed out the weak, the people who won't stick it out.
-everphilski-
Re:Just use your Social Security number.
on
Too Many Passwords
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· Score: 1
Slashdot Mirror
My one disappointment is that they are using a "standardized" XCOR airframe/engine. Diamandis says he thinks of it as "a rememberance of Star Wars pod racing" ... well they didn't use standardized airframes :) they built it and brought it. I wish they could take the same mentality.
-everphilski-
RTFA.
5,000 feet is an altitude that may be covered in seconds by a rocket at speed. No, it will be covered at 5000/(Velocity in Feet Per Seconds) seconds.
With a max speed of 320 MPH (which you surely would not be doing in a maneuvering course) a two mile length of track would take 22.5 seconds per lap. Faster than NASCAR, yes. But that's the point.
The article specifically states kerosene engines. Kerosene is a liquid at all but the most extreme temperatures.
I cannot imagine any braking system that would allow such a craft to slow down adequately for a "turn."
It's called aerodynamics. Flaps. And you won't be gunning it most of the time. It depends on the course.
The dynamics of these racers would appear to all but defy anything we have ever produced.
Check out XCOR's website. The spec listed on the Rocket Racing website is very similar to the bird XCOR is currently flying, and will be flying at the XPRIZE cup.
And such a craft would not necessarily operate in outer space. No !@#$
-everphilski-
The same way you make the Blue Angels look impressive ... a "chase" plane that doesn't chase but rather engages head-on from time to time, and at other times intersects the path at various angles. You will get a very real perception of velocity.
-everphilski-
Your right, SL2. Typing too fast. Either way, I love the mileave I've been getting.
-everphilski-
Umm... Bernoulli and Newtonian views both explain the phenomenon of lift and are in agreement. It's just two different perspectives of looking at the same problem.
... pick up a good aerodynamics text, I'd recommend "Fundamentals of Aerodynamics" by Anderson)
it must be made clear that it is utterly false. There is no requirement that the air over the top must catch up to the air below
Actually this is known as the Kutta condition. The airflow on top must speed up, but by the end of the flow it must slow down to be the same speed as the flow below. (I'm not a big fan of Wikipedia
-everphilski-
Saturns must have gotten better, my 97 LS2 (manual) gets about 28 mpg city.
-everphilski-
Sure. But we have had good measurements on said data for how long? 100 years, and that's being generous. How long has the world existed? 8000-4 billion years, depending on how you ask. That's like asking how a baseball game is going based on looking at a single pitch.
We simply don't have enough data to make these kinds of statements.
-everphilski-
Windows XP just works. In order to get the conglomeration of games and engineering software I need working on Linux, it's just too much work. I put in my 40+ at work, I take grad school classes at night, I don't have time (even if it's only one time and I never f*ck it up) to set up a linux box. XP installed in under an hour, didn't need to spend hours upon hours getting oddball pieces of software working with WINE (some of the software I need to use has a userbase of
:)
I want to come home and relax, not be a sysadmin.
And (parting shot) MacOS is just too simple. Sorry. My brain requires multiple mouse buttons, by default
-everphilski-
You have discovered the secret of /. ... I'd suggest you start running. The black vans are on their way...
-everphilski-
Global warning is the result of greedy men (i.e. sinners) polluting the air
That isn't fact. Keep science and religion seperate. Many believe global warming come in cycles (IE: leaving an ice age). You're bound to offend more people than you comfort.
-everphilski-
Sure. I have no problem with that. I have a problem with people crying foul, that Fox is presenting a "biased news story" when it is an opinion piece.
-everphilski-
I used to. It worked well. But after having a thumb drive for a month I wouldn't switch back. I have my entire "my documents" and development tree stored on my thumb drive. It is always the latest and most updated version. When I arrive at work, I copy it over. When I leave work, i copy from the computer to the thumb drive. Same as home. The internet worked ... unless internet was out at home. Or if internet was out at work. And the data was too preicous not to have even for a few hours. And when you are in an environment where internet traffic is heavily monitored (and pushing upwards of 100M) the thumb drive reigns supreme.
-everphilski-
... it is an OPINION piece under the "Views" section of the site. You should have noticed that in the header.
And if you don't believe me, go to www.foxnews.com and click on "Opinion". It will take you to this article.
-everphilski-
It is an opinion story. Go straight to the base web site, www.foxnews.com, and click on opinion. BAM, you arrive at this so-called "article".
The blind leading the blind around here...
-everphilski-
... If you dont believe me. Go to www.foxnews.com, and click on "opinion" (don't take the submenu). It will take you to this article.
Theres nothing wrong with an opinion article saying that he is against the switch to open source formats (he makes a few valid points - the exception of Adobe Acrobat products and the fact that OO Calc does truly suck).
-everphilski-
No. Its trading money for astronaut seats (something ESA could never do... build a freaking capsule)
-everphilski-
Wow. Someone completely missed it.
Russia needs venture capital. ESA can't come up with their own manned space program. They hook up. We'll see what happens in a few years.
-everphilski-
1. Russia already has it engineered. Plans are made, mockups are built. Some test pieces are already constructed.
... the ESA didn't do shit for Clipper (formerly Klipper when it was an exclusively Russian project) other than potentially help fund it.
2. The vehicle will be launch on top of a Russian launch vehicle.
3. The vehicle will be launched from a Russian facility.
Therefore...
4. All Russia is just looking for capital to build. They know the US can't give them money due to the non-proliferation act (with exception, possibly, for a few soyuz flights with the condition that they support Space Station).
My angle? I hate the fact that people keep trumpeteering that "The ESA is so much better than NASA" "The ESA this" "The ESA that"
-everphilski-
No. It wouldn't have been. We couldn't have gotten the shuttle (or a soyuz for that matter... any manned carrier) to a lagrange point. He was saying a lower inclination orbit, probably 28.6 degrees, the inclination of JSC in Florida. It would have added several thousand pounds usable payload to each shuttle flight.
-everphilski-
Yup. I think 80% dropout rate is fine. People are overambitious. They bite off more than they can chew. Five years (the average amount of time it takes to complete a mechanical/aerospace degree, which I have experiance in) is a *long* time to be overambitious. The freshmen classes act as a filter (something you learn about in senior level classes, if you make it :)
... you would be faced with bad TA's.
I had very few TA's. And none of them were in the Engineering department, they were all in the math and chemistry department. So even if you dropped engineering to do something else
Again, I feel bad for whatever school you went to. It sucks. But you have to realise that not everyone who signs up for a course of study is cut out to finish it.
-everphilski-
I feel sorry for you. Paying thousands of dollars for a single class?!? What school did you go to?
I had the opposite experiance. I never had a class of 100 students - most times it was under 50 even at the freshman level. Overall it was a very postive experiance and I was one of the few that stuck it out and got my degree in (Aerospace) engineering (our school has ~80% "dropout" rate of students who switch to other majors between Freshman and Junior years).
The truth is not everyone who signs up to be "insert major here" is cut out to be it. You have to be dedicated. You have to work through the shit, and yes sometimes you have to deal with people you don't want to deal with. It's part of growing up. Maybe engineering is unreasonably intolerable to some, maybe that's a sign its not for you.
-everphilski-
Your brother would be wise to specialize. Mechanical engineering in itself is very generic. Specialists in things like chemical/nuclear/aerospace engineering are hard to outsource due to sensitive information crossing country borders. ... I feel very comfortable that I will have a job for years to come)
(I happen to be an aerospace engineer
-everphilski-
... and those of us who stuck it out, who were able to look past our GPA's, who were able to realise "hey, getting a 55% on an exam is OK if the average was a 45%", we are enjoying better than average pay and benefits in our engineering jobs. You get back what you put in. Freshmen engineeering courses are BUILT to weed out the weak, the people who won't stick it out.
-everphilski-
No letters. Won't pass on some password systems.
-everphilski-
... nobody seems to be a big fan ...
-everphilski-